General objective of this lecture is to present on Blood and Behavior. Here briefly focus on how blood influences your behavior and character. This lecture briefly present on Blood group: O, A, B and AB. Here briefly differentiate between Blood and Behavior: Personality, Behavior, Tolerance, Emotions and How they work. Examples like: Blood group O: Ability to concentrate varies from time to time, depending on aim. Blood Group B: Cannot take orders easily etc.